int CIENum;
bool UsingCFI;
bool IsEH;
+ const MCSymbol *SectionStart;
public:
- FrameEmitterImpl(bool usingCFI, bool isEH) : CFAOffset(0), CIENum(0),
- UsingCFI(usingCFI),
- IsEH(isEH) {
+ FrameEmitterImpl(bool usingCFI, bool isEH, const MCSymbol *sectionStart) :
+ CFAOffset(0), CIENum(0), UsingCFI(usingCFI), IsEH(isEH),
+ SectionStart(sectionStart) {
}
const MCSymbol &EmitCIE(MCStreamer &streamer,
// If advancing cfa.
if (Dst.isReg() && Dst.getReg() == MachineLocation::VirtualFP) {
- assert(!Src.isReg() && "Machine move not supported yet.");
-
if (Src.getReg() == MachineLocation::VirtualFP) {
Streamer.EmitIntValue(dwarf::DW_CFA_def_cfa_offset, 1);
} else {
const TargetAsmInfo &asmInfo = context.getTargetAsmInfo();
MCSymbol *sectionStart;
- if (asmInfo.isFunctionEHFrameSymbolPrivate())
+ if (asmInfo.isFunctionEHFrameSymbolPrivate() || !IsEH)
sectionStart = context.CreateTempSymbol();
else
sectionStart = context.GetOrCreateSymbol(Twine("EH_frame") + Twine(CIENum));
MCContext &context = streamer.getContext();
MCSymbol *fdeStart = context.CreateTempSymbol();
MCSymbol *fdeEnd = context.CreateTempSymbol();
- const TargetAsmInfo &asmInfo = context.getTargetAsmInfo();
+ const TargetAsmInfo &TAsmInfo = context.getTargetAsmInfo();
- if (!asmInfo.isFunctionEHFrameSymbolPrivate()) {
+ if (!TAsmInfo.isFunctionEHFrameSymbolPrivate() && IsEH) {
MCSymbol *EHSym = context.GetOrCreateSymbol(
frame.Function->getName() + Twine(".eh"));
streamer.EmitEHSymAttributes(frame.Function, EHSym);
streamer.EmitAbsValue(Length, 4);
streamer.EmitLabel(fdeStart);
+
// CIE Pointer
+ const MCAsmInfo &asmInfo = context.getAsmInfo();
if (IsEH) {
const MCExpr *offset = MakeStartMinusEndExpr(streamer, cieStart, *fdeStart,
0);
streamer.EmitAbsValue(offset, 4);
+ } else if (!asmInfo.doesDwarfRequireRelocationForSectionOffset()) {
+ const MCExpr *offset = MakeStartMinusEndExpr(streamer, *SectionStart,
+ cieStart, 0);
+ streamer.EmitAbsValue(offset, 4);
} else {
streamer.EmitSymbolValue(&cieStart, 4);
}
- unsigned fdeEncoding = asmInfo.getFDEEncoding(UsingCFI);
+ unsigned fdeEncoding = TAsmInfo.getFDEEncoding(UsingCFI);
unsigned size = getSizeForEncoding(streamer, fdeEncoding);
// PC Begin
- unsigned PCBeginEncoding = IsEH ? fdeEncoding : dwarf::DW_EH_PE_absptr;
+ unsigned PCBeginEncoding = IsEH ? fdeEncoding :
+ (unsigned)dwarf::DW_EH_PE_absptr;
unsigned PCBeginSize = getSizeForEncoding(streamer, PCBeginEncoding);
EmitSymbol(streamer, *frame.Begin, PCBeginEncoding);
void MCDwarfFrameEmitter::Emit(MCStreamer &streamer,
bool usingCFI,
bool isEH) {
- const MCContext &context = streamer.getContext();
+ MCContext &context = streamer.getContext();
const TargetAsmInfo &asmInfo = context.getTargetAsmInfo();
const MCSection §ion = isEH ?
*asmInfo.getEHFrameSection() : *asmInfo.getDwarfFrameSection();
streamer.SwitchSection(§ion);
+ MCSymbol *SectionStart = context.CreateTempSymbol();
+ streamer.EmitLabel(SectionStart);
MCSymbol *fdeEnd = NULL;
DenseMap<CIEKey, const MCSymbol*> CIEStarts;
- FrameEmitterImpl Emitter(usingCFI, isEH);
+ FrameEmitterImpl Emitter(usingCFI, isEH, SectionStart);
const MCSymbol *DummyDebugKey = NULL;
for (unsigned i = 0, n = streamer.getNumFrameInfos(); i < n; ++i) {